The Microcontroller Unit (MCU) software matches the Android OS.
Usually marketed as Android 10, 11, or 12 (though many cheap units fake the API level, running Android 8.1 or 9 under the hood). Why Do You Need "Verified" Firmware?
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Custom themes, pre-activated MCU files, and verified ZLink packages. Specialized Device Forums
Click the on the tool interface. Ensure your Android head unit is completely powered off. Connect the USB cable to your PC.
For these units, "verified" typically means the firmware has been released by a reputable vendor or tested by the community on forums like XDA Developers Official Vendor Support : If you have a Joying Android Unit